Propeller



Nov. 30, 1937. I J. c. HASBROUCK 2,100,592

\ PROPELLER Filed Jan. 15, 1936 A tlorneys Patented Nov. 30, 1937 UNE'EED STATES PROPELLER John C. Hasbrouck, Detroit, Mich, assignor of one-half to Fred Weidman, Detroit, Mich.

Application January 15, 1936, Serial No. 59,2 7

6 Claims. (01. 17o-15e) My invention relates to an aeroplane having propelling means conforming in streamline manner to the front or nose of the body or fuselage of the aeroplane, and an important object of the invention is to provide a rotary propelling um't therein which is located immediately adjacent to the body but is entirely separate therefrom.

Another important object of the invention is to provide propelling means of the character indicated which is directly carried and operated by the shaft of the propelling engine whereby friction is reduced to a minimum.

Another important object of the invention is to reduce head resistance by specially shaping the forwardly pointed nose of the propelling means forming the body thereof, and by specially forming the shape and arrangement of the blades, whereby maximum forward motion is secured, greater motor efiiciency is promoted and other aero-dynamic advantages obtained.

Another important object of the invention is to provide structure of the character indicated above whereby danger of breakage of the blades of the propelling means in flight is eliminated, and to produce propelling means whose greatest effect is located in the center of the same or at the base of the blades, the power effect extending throughout the length of the blades.

Other important objects of the invention will be apparent from a reading of the following description in connection with the drawing, wherein for purposes of illustration I have shown a preferred embodiment of my invention.

In the drawing:

Figure 1 is a plan view of an aeroplane in accordance with the invention with the rear portion broken away.

Figure 2 is a plan view partly in section of the propelling means.

Figure 3 is a rear elevational view of the pro-.

' nates the body of the aeroplane which has sustaining wings l projecting laterally therefrom and the rear of the body is provided with the usual flight guiding means. At the front of the body A is the propelling means B. This includes the front section 2 of the body, which is parabolic in axial section or forwardly tapered. This section 2 is flush with the main section 3 of the body and with the latter is designed on the streamline principle. The nose section 2 is carried by the engine shaft 4, and on the outside of the shell or nose section 2 are propeller blades 6. These blades extend rearwardly to a considerable dis-,

tance and the outer ends 'I are disposedat a considerable radial distance from the shaft 4, and.

viewed from in rear, as shown in Figure 3, the rear ends 8 of the blades are displaced aboutininety degrees from the front ends 1, which front ends project radially from the shaft.

I n For durability and strength the front or root ends of the blades pass through the shell xofithe nose 2,.as shown in Figure 2,'and are clamped to the engine shaft 4. The rear ends 8 of the blades are fastened to the rear marginal portion of the nose 2, which latter is stiffened as well as connected with the engine shaft 4 by a wheel-like frame 9. This frame as shown in Figure 3 has arms Ill and a rim ll, all reinforced by a hub I2. This structure formed of the shell 2, shaft 4,

'ation will be readily understood by those skilled in the art to which the invention appertains, and while I have described the principle of operation, together with the structure which I now consider to be the best embodiment thereof, I desire to have it understood that the structure shown is merely illustrative and that such changes may be made when desired as fall within the scope of the appended claims.

What is claimed is:

1. An airship propeller comprising a propeller shaft, a conical shell surrounding said shaft, rearwardly curved propelling blades having their front ends extending radially through said shell and fastened to said shaft and having their rear ends fastened to the rear portion of said shell, and a frame including a web in the shell and supporting said shell on said shaft.

2. A propeller of the character described comprising a propeller shaft, a substantially conical shell arranged axially on said shaft, said shell blades 6 and frame 9 is a rotary unit carried by comprising a frame having a web composed of a series of radially extending arms, means anchor,- ing the radially inward ends of said arms to said propeller shaft and fastening said shell on said propeller shaft, and propeller blades lying longitudinally along the exterior of said shell, said propeller blades spiralling radially outwardly and rearwardly, said propeller blades having their forward ends fastened to said propeller shaft and their rearward ends fastened to a rearward part of said shell.

3. A propeller of the character described comprising a propeller shaft, a circular web fastened axially to said shaft, a substantially conical shell extending axially along said shaft and having its rear and larger end fastened to said web, and rearwardly and radially outwardly tending propeller blades along the exterior of said shell, said propeller blades having rearward portions thereof fastened to the rear and larger end of said shell so that the blades are beyond the shell to its rear, said propeller blades having forward portions which are radially inwardly directed and pass through openings in the forward end of said shell, and means anchoring the forward portions of the propeller blades to said propeller shaft.

4. A propeller comprising a shaft, a web fastened axially on said shaft, rearwardly and radially outwardly extending propeller blades, first means fastening the front ends of said blades to said shaft, and second means fastening the rear portions of said blades to peripheral portions of said web.

5. A propeller comprising a shaft, a web fastened axially on said shaft, rearwardly and radially outwardly extending propeller blades, means fastening the front ends of said blades to said'shaft, means fastening the rear portions of said bladesto peripheral portions of said web, and a substantially conical shell axially arranged on said shaft forwardly of said web and having its rear part fastened to said-web and also having its front end supported by said shaft, said shell at its front end being penetrated by the inner edges of the blades and at its rear end being spaced inwardly of said inner edges;

6. A propeller comprising a shaft, a web fastened axially on said shaft, rearwardly and radially outwardly extending propeller blades, means fastening the front ends of said blades to said shaft, and means fastening the rear portions of said blades to peripheral portions of said web, and a substantially conical shell axially arranged on said shaft forwardly of said web and having its rear part fastened to said web, said shell havingits forward pointed end arranged slightly forwardly of the point of fastening of the front ends of the blades.

JOHN C. HASBROUCK. 

